Help required to simulate working of scrcpy-server.jar

[krishtoautomate]

Can you please help me capture buffer data from scrcpy-server.jar

Step 1 :

adb push dist/server/vendor/Genymobile/scrcpy/scrcpy-server.jar /data/local/tmp

Step 2:

adb shell 'CLASSPATH=/data/local/tmp/scrcpy-server.jar app_process / com.genymobile.scrcpy.Server 1.17-ws5 DEBUG 0 8000000 60 -1 false - false true 0 false false - web 8886'

error:

[server] ERROR: Exception on thread Thread[main,5,main]
java.lang.IllegalArgumentException: Expecting 15 parameters
at com.genymobile.scrcpy.Server.parseArguments(Server.java:43)
at com.genymobile.scrcpy.Server.main(Server.java:152)
at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)
at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:409)

Step 3:

adb forward tcp:8666 localabstract:scrcpy

Step 4:

nc localhost 8666

[drauggres]

*Step 2:

adb shell 'CLASSPATH=/data/local/tmp/scrcpy-server.jar app_process / com.genymobile.scrcpy.Server 1.17-ws5 web DEBUG 8886'

*Step 3:

adb forward tcp:8886 tcp:8886

Or you can skip it and connect to DEVICE_IP:8886 directly, scrcpy-server.jar from this project listens on TCP port, not a localabstract.

But you will not see anything in nc localhost 8666, you have a Web Socket server on the other end.

What exactly are you trying to achieve?

[krishtoautomate]

i want to create similar to below project for ws-scrcpy

https://github.com/DeviceFarmer/minicap

run jar in terminal(command line)
capture and display video in url.

ws-scrcpy is too big to understand.

[krishtoautomate]

Still dont receive any data:

step 1:
adb shell 'CLASSPATH=/data/local/tmp/scrcpy-server.jar app_process / com.genymobile.scrcpy.Server 1.17-ws5 web DEBUG 8886'

Response: [server] DEBUG: Server started! ::/:::8886

step 2:
const WebSocket = require('ws');

var webSocket = new WebSocket('ws://127.0.0.1:8666');
webSocket.onmessage = function(data) { console.log(data); }

Response: error

Error: socket hang up
at connResetException (internal/errors.js:570:14)
at Socket.socketOnEnd (_http_client.js:440:23)
at Socket.emit (events.js:228:7)
at endReadableNT (_stream_readable.js:1185:12)
at processTicksAndRejections (internal/process/task_queues.js:81:21)
Emitted 'error' event on WebSocket instance at:
at ClientRequest.emit (events.js:223:5)
at Socket.socketOnEnd (_http_client.js:440:9)
at Socket.emit (events.js:228:7)
at endReadableNT (_stream_readable.js:1185:12)
at processTicksAndRejections (internal/process/task_queues.js:81:21) {
code: 'ECONNRESET'
}

[drauggres]

Server in scrcpy-server.jar from this project is a Web Socket Server (ws in ws-scrcpy stands for Web Socket).
To connect to WebSockets from node.js I use https://github.com/websockets/ws.
For browser you will need to do something like this:

const ws = new WebSocket(`ws://127.0.0.1:8886/`); 
ws.binaryType = 'arraybuffer';
ws.onmessage =  function(data) { console.log(data); };

Code:

ws-scrcpy/src/app/client/ManagerClient.ts

Lines 29 to 37 in 67cc51c

	protected openNewWebSocket(): WebSocket {
	if (this.ws && this.ws.readyState === this.ws.OPEN) {
	this.ws.close();
	}
	this.ws = new WebSocket(this.url.toString());
	this.ws.onopen = this.onSocketOpen.bind(this);
	this.ws.onmessage = this.onSocketMessage.bind(this);
	this.ws.onclose = this.onSocketClose.bind(this);
	return this.ws;

ws-scrcpy/src/app/client/StreamReceiver.ts

Lines 50 to 51 in 67cc51c

	this.openNewWebSocket();
	(this.ws as WebSocket).binaryType = 'arraybuffer';

Or you might want to use original scrcpy-server.jar and use raw TCP from node.js. To find arguments for it in this case:

1. run scrcpy
2. find server pid, something like: adb shell 'ps -A | grep app_process'
3. find arguments: adb shell 'cat /proc/<PID>/cmdline'
   Arguments will be separated by \0, i.e. look like there is no space.

[krishtoautomate]

Tried but no luck

Step 1:

adb shell 'CLASSPATH=/data/local/tmp/scrcpy-server.jar app_process / com.genymobile.scrcpy.Server 1.17-ws5 web DEBUG 8886'

Response: [server] DEBUG: Server started! ::/:::8886

step 2:

const WebSocket = require('ws');

const ws = new WebSocket(ws://127.0.0.1:8886/);
ws.binaryType = 'arraybuffer';
ws.onmessage = function(data) { console.log(data); };

error:

events.js:200
throw er; // Unhandled 'error' event
^

Error: connect ECONNREFUSED 127.0.0.1:8886
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1134:16)
Emitted 'error' event on WebSocket instance at:
at ClientRequest. (/Users/user/node-scrcpy-client/node_modules/ws/lib/websocket.js:579:15)
at ClientRequest.emit (events.js:223:5)
at Socket.socketErrorListener (_http_client.js:406:9)
at Socket.emit (events.js:223:5)
at emitErrorNT (internal/streams/destroy.js:92:8)
at emitErrorAndCloseNT (internal/streams/destroy.js:60:3)
at processTicksAndRejections (internal/process/task_queues.js:81:21) {
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 8886
}

[drauggres]

You must either forward port to localhost (127.0.0.1) with

adb forward tcp:8886 tcp:8886

or connect to device directly

const ip = '192.168.1.101';   // change to your ip address here
const ws = new WebSocket(`ws://${ip}:8886/`)

[krishtoautomate]

adb shell 'killall app_process'
adb push dist/server/vendor/Genymobile/scrcpy/scrcpy-server.jar /data/local/tmp/scrcpy-server.jar

adb shell 'CLASSPATH=/data/local/tmp/scrcpy-server.jar app_process / com.genymobile.scrcpy.Server 1.17-ws5 web DEBUG 8886'

adb forward tcp:8886 tcp:8886

const WebSocket = require('ws');

const ws = new WebSocket(ws://localhost:8886/);

ws.binaryType = 'arraybuffer';
ws.onmessage = function(data) { console.log(data); };

worked.

[krishtoautomate]

why buffer is not continues?

how do i display to browser?

[krishtoautomate]

should i send any message to websocket to receive video buffer array in non-stop?

[drauggres]

After connection you should receive initial info:

ws-scrcpy/src/app/client/StreamReceiver.ts

Lines 131 to 135 in 67cc51c

	const magicBytes = new Uint8Array(e.data, 0, MAGIC_BYTES_INITIAL.length);
	if (StreamReceiver.EqualArrays(magicBytes, MAGIC_BYTES_INITIAL)) {
	this.handleInitialInfo(e.data);
	return;
	}

To start stream you must send ControlMessage.TYPE_CHANGE_STREAM_PARAMETERS message:

ws-scrcpy/src/app/googDevice/client/StreamClientScrcpy.ts

Lines 207 to 211 in 67cc51c

	if (!videoSettings || !screenInfo) {
	this.joinedStream = true;
	this.sendMessage(CommandControlMessage.createSetVideoSettingsCommand(currentSettings));
	return;
	}